AT384133B - FLASH KEY SWITCHING - Google Patents

FLASH KEY SWITCHING

Info

Publication number
AT384133B
AT384133B AT0412384A AT412384A AT384133B AT 384133 B AT384133 B AT 384133B AT 0412384 A AT0412384 A AT 0412384A AT 412384 A AT412384 A AT 412384A AT 384133 B AT384133 B AT 384133B
Authority
AT
Austria
Prior art keywords
key switching
flash key
flash
switching
key
Prior art date
Application number
AT0412384A
Other languages
German (de)
Other versions
ATA412384A (en
Inventor
Guenther Ing Hannak
Original Assignee
Kapsch Ag
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Kapsch Ag filed Critical Kapsch Ag
Priority to AT0412384A priority Critical patent/AT384133B/en
Priority to DE19853543075 priority patent/DE3543075A1/en
Priority to HU854931A priority patent/HU192380B/en
Priority to NO855248A priority patent/NO855248L/en
Priority to NL8503570A priority patent/NL8503570A/en
Publication of ATA412384A publication Critical patent/ATA412384A/en
Application granted granted Critical
Publication of AT384133B publication Critical patent/AT384133B/en

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/26—Devices for calling a subscriber
    • H04M1/53—Generation of additional signals, e.g. additional pulses
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M3/00—Automatic or semi-automatic exchanges
    • H04M3/42—Systems providing special services or facilities to subscribers
    • H04M3/58—Arrangements for transferring received calls from one subscriber to another; Arrangements affording interim conversations between either the calling or the called party and a third party

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Devices For Supply Of Signal Current (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Telephone Function (AREA)
  • Telephonic Communication Services (AREA)
  • Sub-Exchange Stations And Push- Button Telephones (AREA)
  • Relay Circuits (AREA)
AT0412384A 1984-12-28 1984-12-28 FLASH KEY SWITCHING AT384133B (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
AT0412384A AT384133B (en) 1984-12-28 1984-12-28 FLASH KEY SWITCHING
DE19853543075 DE3543075A1 (en) 1984-12-28 1985-12-05 Flash key circuit for the signal-transmitting interruption of a subscriber line in a telephone system with multi-frequency dialling
HU854931A HU192380B (en) 1984-12-28 1985-12-20 Flash-key circuit for breaking the subscriber's signalling line of telephone set with multifrequency change
NO855248A NO855248L (en) 1984-12-28 1985-12-23 DEVICE FOR PHONE SYSTEMS.
NL8503570A NL8503570A (en) 1984-12-28 1985-12-24 FLASH KEY SWITCH FOR SIGNALLY INTERRUPTING A SUBSCRIBER PIPE ON A TELEPHONE INSTALLATION WITH MULTIPLE FREQUENCY SELECTION.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
AT0412384A AT384133B (en) 1984-12-28 1984-12-28 FLASH KEY SWITCHING

Publications (2)

Publication Number Publication Date
ATA412384A ATA412384A (en) 1987-02-15
AT384133B true AT384133B (en) 1987-10-12

Family

ID=3559965

Family Applications (1)

Application Number Title Priority Date Filing Date
AT0412384A AT384133B (en) 1984-12-28 1984-12-28 FLASH KEY SWITCHING

Country Status (5)

Country Link
AT (1) AT384133B (en)
DE (1) DE3543075A1 (en)
HU (1) HU192380B (en)
NL (1) NL8503570A (en)
NO (1) NO855248L (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19609233B4 (en) * 1996-03-09 2005-09-01 Deutsche Telekom Ag Method for generating a control signal in a pulse dialing method for a public exchange
DE19924850A1 (en) * 1999-05-29 2000-11-30 Deutsche Telekom Ag Adapter for adapting period of flash pulse triggered by telephone terminal has level converter, monostable multivibrator triggered by level change, switch activated by multivibrator

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2723985A1 (en) * 1977-05-27 1978-11-30 Krone Gmbh Telephone interruption circuit with preset duration - has transistors and other components to provide operation independent of control mode, current and temp.
DE2920944A1 (en) * 1979-05-21 1980-11-27 Deutsche Telephonwerk Kabel Telephone instrument flash disconnection signalling circuit - has time constant circuit charged from line to switch transistor and trigger thyristor

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2432454A1 (en) * 1974-07-06 1976-01-22 Telefonbau & Normalzeit Gmbh Brief interruption effect producting cct - has two-terminal network controlled by switch

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2723985A1 (en) * 1977-05-27 1978-11-30 Krone Gmbh Telephone interruption circuit with preset duration - has transistors and other components to provide operation independent of control mode, current and temp.
DE2920944A1 (en) * 1979-05-21 1980-11-27 Deutsche Telephonwerk Kabel Telephone instrument flash disconnection signalling circuit - has time constant circuit charged from line to switch transistor and trigger thyristor

Also Published As

Publication number Publication date
DE3543075C2 (en) 1987-08-20
HU192380B (en) 1987-05-28
DE3543075A1 (en) 1986-09-18
NL8503570A (en) 1986-07-16
ATA412384A (en) 1987-02-15
HUT39303A (en) 1986-08-28
NO855248L (en) 1986-06-30

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Legal Events

Date Code Title Description
ELJ Ceased due to non-payment of the annual fee
ELJ Ceased due to non-payment of the annual fee